PubMed · 15899690
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John P Elder. ViewPoint: conversation with John P. Elder, PhD.. https://pubmed.ncbi.nlm.nih.gov/15899690/
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Although many attempts to change health behaviour fail, some individuals do show successful behaviour change. This study assessed the role of behavioural intentions, motivations and attitudes to the target in explaining successful changes in diet with a particular focus on positive and negative intentions and positive and negative attitudes. Participants (n=282) completed a questionnaire describing a recent change in eating behaviour (becoming a vegetarian, cutting out a food group, eating fewer calories), their intentions, their attitudes to the food being avoided, a range of motivations and their degree of success. The results showed that the three behaviour change groups differed in terms of their cognitions with those trying to eat fewer calories reporting less success in changing their behaviour. Successful vegetarianism was associated with a lower positive attitude; successfully cutting out a food group was related to ethical motivations, a lower positive attitude and greater positive and negative intentions, and reducing calorie intake was associated with greater positive intentions and a lower positive attitude. Therefore, success was associated with different cognitions depending upon the type of change being made, although cognitions such as 'I will eat more vegetables' and 'I no longer find high fat foods palatable' were consistently most predictive of success. Suggestions for the development of more effective interventions to change health behaviours are made.
Participants in substance abuse research may be vulnerable for multiple reasons. International research ethics guidelines and policy statements require that researchers provide extra protections when conducting research with vulnerable subjects, but it is uncertain which measures best protect vulnerable individuals. Concerns about vulnerability have been translated into only the vaguest regulatory requirements, and very little empirical data exist to guide researchers and ethics review committee members who want to protect participants. This article reviews two bodies of substance abuse research ethics literature. First, "normative" articles, that is, articles that discuss ethical issues that may arise in substance abuse research, are discussed. The resulting taxonomy of ethical issues then guides a review of empirical studies on issues like the informed consent process and the use of financial incentives in substance abuse research. While the ethical issues in substance abuse research are numerous and well-documented, the evidentiary base for addressing these issues is inadequate. If any one major theme emerged from the existing studies, it is that many well-intentioned, protectionist concerns--about recruitment incentives, consent comprehension, and drug administration studies--are not supported by empirical data. While these findings are at best tentative, they suggest how research on research ethics might ultimately benefit participants.
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